CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net Income	$ 1,090,356	$ 919,468
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	885,711	822,197
Deferred Income Taxes	170,752	191,346
Uncollectible Expense	40,753	39,690
Pension, SERP and PBOP Income, Net	(120,416)	(10,882)
Pension and PBOP Contributions	(80,000)	(140,000)
Regulatory (Under)/Over Recoveries, Net	(32,193)	87,455
(Customer Credits)/Reserve at CL&P related to PURA Settlement Agreement and Storm Performance Penalty	(72,041)	103,583
Amortization	418,644	158,860
Cost of Removal Expenditures	(284,706)	(138,730)
Other	(113,148)	(91,148)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(294,383)	(158,205)
Taxes Receivable/Accrued, Net	160,260	44,003
Accounts Payable	11,821	(258,509)
Other Current Assets and Liabilities, Net	(92,506)	(48,855)
Net Cash Flows Provided by Operating Activities	1,688,904	1,520,273
Investing Activities:
Investments in Property, Plant and Equipment	(2,352,743)	(2,211,136)
Proceeds from Sales of Marketable Securities	340,660	334,619
Purchases of Marketable Securities	(313,714)	(313,961)
Investments in Unconsolidated Affiliates	(617,588)	(245,245)
Other Investing Activities	15,245	17,436
Net Cash Flows Used in Investing Activities	(2,928,140)	(2,418,287)
Financing Activities:
Issuance of Common Shares, Net of Issuance Costs	197,108	0
Cash Dividends on Common Shares	(643,634)	(603,611)
Cash Dividends on Preferred Stock	(5,639)	(5,639)
Decrease in Notes Payable	(1,103,950)	(458,325)
Repayment of Rate Reduction Bonds	(43,210)	(43,210)
Issuance of Long-Term Debt	4,045,000	3,150,000
Retirement of Long-Term Debt	(775,000)	(1,142,500)
Other Financing Activities	(50,191)	(45,522)
Net Cash Flows Provided by/(Used in) Financing Activities	1,620,484	851,193
Net Increase/(Decrease) in Cash, Cash Equivalents and Restricted Cash	381,248	(46,821)
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	221,008	264,950
Cash, Cash Equivalents and Restricted Cash - End of Period	$ 602,256	$ 218,129